A customer of mine called me up to look at this series of black spots all over the front of her house, including the concrete and face of the house. I have never seen this stuff and it is all over, I would like to advise her as to what it is. I will also be cleaning and sealing her concrete and would like to get the black spots up. Has anyone ever seen anything like this?
Hello all,
A customer of mine called me up to look at this series of black spots all over the front of her house, including the concrete and face of the house. I have never seen this stuff and it is all over, I would like to advise her as to what it is. I will also be cleaning and sealing her concrete and would like to get the black spots up. Has anyone ever seen anything like this?
Thanks in advance,
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